Reminding yourself to be in a Context, and watch lists
I have noticed a few times that I will be working on my @work contexts, and then forgetting things that I needed to pick up (@errands), or a second facility I need to do some work at (@other building). How do people "remind" themselves to be in certain contexts. I don't want to put these in my @work context because it will be things that I cannot do in that context. Should I make a task "Go to place x", in @work, thereby not listing the tasks that are in the other contexts, but reminding myself to go? What do you do?
My other question is that I have several "things" that I am monitoring or watching. For example, monitoring temperature change in a certain area of the building, or watching the price of eggs in china. These really aren't projects or next actions. What are they?